Related Experiment Video
Updated: Oct 9, 2026

Endoscopy Guided Photoablation of Endometrial Cysts using a 980 nm Laser with a Contact Fiber in Mares
Published on: July 16, 2020
Hysteroscopic appearance of the uterine cavity before and after microwave endometrial ablation
1McGill Reproductive Center, 687 Pine Avenue West, Montreal, Quebec H3A1A1, Canada.
Study Objective:
To evaluate the appearance of the uterine cavity before and after microwave endometrial ablation (MEA).
Design:
Prospective observational study (Canadian Task Force classification II-2).
Setting:
University teaching hospital.
Patients:
Sixty-two women with menorrhagia.
Intervention:
Hysteroscopic examination the uterine cavity before and after MEA.
Measurements And Main Results:
Ablation was complete in 55 patients (group A). Seven women had a small island of intact endometrium (group B); the uterine cavity was severely distorted in six of these patients due to submucous myomas in five and adenomyosis in one. Another patient in this group had an acutely retroverted uterus, a 15-mm intramural myoma, and a normal uterine cavity. Women in group B had deeper uterine cavity than those in group A (101.4 +/- 15.5 and 84.7. +/- 12.8 mm, respectively, p = 0.008). The duration of ablation was also longer in group B (329.1 +/- 158.4 sec) than in group A (206.1 +/- 67.4 sec, p = 0.01).
Conclusion:
Microwave endometrial ablation tends to be incomplete in women with a large and severely distorted uterine cavity. Whether, this results in a lower success rate remains to be seen. (J Am Assoc Gynecol Laparosc 8(1):83-86, 2001)
